发明名称 |
Multiple-chamber gear pump for ink jet printing |
摘要 |
Pump heads comprising at least two gear-pump chambers are disclosed. Each chamber comprises a housing which defines a corresponding pump cavity. Each cavity contains a driving gear and at least one driven gear and has a separate inlet and outlet. The pump cavities are hydraulically interconnected by a fluid conduit allowing passage whenever the pump chambers are pumping a fluid so as to generate a higher pressure in one cavity relative to the other cavity, of the fluid from the higher-pressure cavity to the lower-pressure cavity sufficient to maintain hydraulic prime of both cavities. The invention is particularly useful for ink jet printing applications.
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申请公布号 |
US5540569(A) |
申请公布日期 |
1996.07.30 |
申请号 |
US19950372985 |
申请日期 |
1995.01.17 |
申请人 |
MICROPUMP, INC. |
发明人 |
ALTHAM, TIM J.;JOHNSON, PAUL A. |
分类号 |
B41J2/075;B41J2/175;F04C2/18;F04C11/00;F04C15/00;(IPC1-7):B14J2/18 |
主分类号 |
B41J2/075 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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